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#1
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memory question
I have the P4P800 and am a little confused by looking at the manual where to
install my 2 sticks of RAM. I have a 512MB and a 256MB ram sticks.... Do I install them in each Blue DIMM or in one bank (first Blk and Blu slots)? Even though Asus says Dual Channel Memory won't work because the memory capacities I have are different, I read somewhere that this is not a factor and should still work, as long as the memory are the same type, which they are, albeit only PC2700 and slightly different timings, but none the less the same brand etc... Any help appreciated. |
#2
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put them in one bank / channel - as they are... not similar
"jimbi" wrote in message ... I have the P4P800 and am a little confused by looking at the manual where to install my 2 sticks of RAM. I have a 512MB and a 256MB ram sticks.... Do I install them in each Blue DIMM or in one bank (first Blk and Blu slots)? Even though Asus says Dual Channel Memory won't work because the memory capacities I have are different, I read somewhere that this is not a factor and should still work, as long as the memory are the same type, which they are, albeit only PC2700 and slightly different timings, but none the less the same brand etc... Any help appreciated. |
#3
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To have dual channel work, you need to put them in the same color banks.
Either in both blue, or both black. "jimbi" wrote in message ... I have the P4P800 and am a little confused by looking at the manual where to install my 2 sticks of RAM. I have a 512MB and a 256MB ram sticks.... Do I install them in each Blue DIMM or in one bank (first Blk and Blu slots)? Even though Asus says Dual Channel Memory won't work because the memory capacities I have are different, I read somewhere that this is not a factor and should still work, as long as the memory are the same type, which they are, albeit only PC2700 and slightly different timings, but none the less the same brand etc... Any help appreciated. |
#4
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so with what I have for memory this will give me dual channel?
"Eric" wrote in message ... To have dual channel work, you need to put them in the same color banks. Either in both blue, or both black. "jimbi" wrote in message ... I have the P4P800 and am a little confused by looking at the manual where to install my 2 sticks of RAM. I have a 512MB and a 256MB ram sticks.... Do I install them in each Blue DIMM or in one bank (first Blk and Blu slots)? Even though Asus says Dual Channel Memory won't work because the memory capacities I have are different, I read somewhere that this is not a factor and should still work, as long as the memory are the same type, which they are, albeit only PC2700 and slightly different timings, but none the less the same brand etc... Any help appreciated. |
#5
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No,
you might get away with relaxed timings on the faster stick, working with slower but they *DO* have to be the same size. "jimbi" wrote in message ... so with what I have for memory this will give me dual channel? "Eric" wrote in message ... To have dual channel work, you need to put them in the same color banks. Either in both blue, or both black. "jimbi" wrote in message ... I have the P4P800 and am a little confused by looking at the manual where to install my 2 sticks of RAM. I have a 512MB and a 256MB ram sticks.... Do I install them in each Blue DIMM or in one bank (first Blk and Blu slots)? Even though Asus says Dual Channel Memory won't work because the memory capacities I have are different, I read somewhere that this is not a factor and should still work, as long as the memory are the same type, which they are, albeit only PC2700 and slightly different timings, but none the less the same brand etc... Any help appreciated. |
#6
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In article , "jimbi"
wrote: I have the P4P800 and am a little confused by looking at the manual where to install my 2 sticks of RAM. I have a 512MB and a 256MB ram sticks.... Do I install them in each Blue DIMM or in one bank (first Blk and Blu slots)? Even though Asus says Dual Channel Memory won't work because the memory capacities I have are different, I read somewhere that this is not a factor and should still work, as long as the memory are the same type, which they are, albeit only PC2700 and slightly different timings, but none the less the same brand etc... Any help appreciated. Intel has a memory guide for the 875/865 chipset. You can plug those mixed size DIMMs in any slots you want. They will end up running in Single Channel or Virtual Single Channel mode. ftp://download.intel.com/design/chip...s/25273001.pdf From an electrical signal performance perspective, I like to stick DIMMs next to the termination resistors on the bus. If you look at the picture of your motherboard in the user manual, the termination resistors are next to the black slots. So, using the two black slots first, theoretically makes the electrical signals on the memory bus look slightly better. (Not that it really matters...) As for whether dual channel operating mode makes a difference, I played with a 865GE based system before Christmas, and yes, you can feel the difference in performance. Using memtest86, the bandwidth number is about 30% more when you use matched memory sticks and the resulting dual channel mode. Just in case you were wondering what you are missing :-) HTH, Paul |
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